Dreams involving driving often symbolize your journey through life and the direction you are taking. In your dream, the abandoned street with potholes and junk may represent feelings of being lost or encountering obstacles in your current situation. The imagery of a deteriorating environment suggests neglect or unresolved issues in your life.

The sunken storage building and the giant possum can symbolize hidden fears or challenges that have emerged unexpectedly. The possum, often associated with survival instincts and adaptability, could represent a part of yourself that feels threatened or is struggling to survive in a difficult environment.

The act of wrestling with the animal and ultimately killing it may reflect your desire to confront and eliminate these challenges or fears. It could indicate a struggle for control over situations in your life that feel overwhelming or threatening. The violence in the dream might suggest that you are feeling a level of frustration or aggression about how to handle these issues.

Overall, this dream could be urging you to acknowledge and address the obstacles you're facing rather than allowing them to persist. It may be beneficial to reflect on areas of your life where you feel overwhelmed or threatened and think about constructive ways to deal with these feelings. Consider seeking support or guidance if you feel stuck.